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CVE-2019-0858

MEDIUMCVSS 6.1/10EPSS 2.10%

Last modified

CVE-2019-0858 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.. EPSS estimates a 2.10% chance of exploitation in the next 30 days.

Description

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability
2.10%

79.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
MicrosoftExchange Server2013Cumulative Update 22
MicrosoftExchange Server2016Cumulative Update 11
MicrosoftExchange Server2019—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-0858?
A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.
How severe is CVE-2019-0858?
CVE-2019-0858 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 2.10% probability of exploitation in the next 30 days.
How do I fix CVE-2019-0858?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-0858?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST